ASTROSAT CZTI

Data Quality Report

Orbit 20143

Creation date: 2024-06-27T18:11:47.921412
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_180T01_9000002992_20143cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20143cztM0_level2_quad_clean.evt
Size (bytes)445,069,44099,100,800
Size424.5 MB 94.5 MB
Events in quadrant A3,309,328650,400
Events in quadrant B3,200,947654,921
Events in quadrant C3,153,265624,981
Events in quadrant D3,372,094616,096

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140301
B0137141
C0134731
D0143641

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65161081.657459%
B6516330.506446%
C6517620.951358%
D6517661.012736%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7446 6517 53 53 0.71% 0.81%
B 7446 6517 0 0 0.00% 0.00%
C 7447 6518 0 0 0.00% 0.00%
D 7447 6518 44 44 0.59% 0.68%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 14 238 274557 1714.51 789 774 159.7
A 0 226 6801 37.74 789 774 159.7
A 3 137 6432 35.43 789 774 159.7
B 10 245 47839 314.35 788 768 149.7
B 0 214 32003 208.59 788 768 149.7
B 12 111 17934 114.64 788 768 149.7
C 14 238 119159 666.65 758 766 177.6
C 3 233 43740 241.98 758 766 177.6
C 7 220 12868 68.14 758 766 177.6
D 1 52 308588 1634.99 765 744 188.3
D 7 238 45291 236.59 765 744 188.3
D 10 172 42153 219.93 765 744 188.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter